[Core] Move SceneCheckerVisitor out of the SceneChecking project into the core

[bakpaul]

Moves the SceneCheck visitor into the core. This is required for the SofaPython3 PR enabling scene checking when launching a scene using python.

(Not a real depends-on, but so you see the effect)
[ci-depends-on https://github.com/sofa-framework/SofaPython3/pull/616]

---

By submitting this pull request, I acknowledge that
I have read, understand, and agree SOFA Developer Certificate of Origin (DCO).

---

Reviewers will merge this pull-request only if

• it builds with SUCCESS for all platforms on the CI.
• it does not generate new warnings.
• it does not generate new unit test failures.
• it does not generate new scene test failures.
• it does not break API compatibility.
• it is more than 1 week old (or has fast-merge label).

[sofabot]

[ci-depends-on] detected during build #1.

To unlock the merge button, you must

• Merge or close Enable scene checking when launching through python SofaPython3#616
  For this build, the following CMake flags will be set
  -DSOFAPYTHON3_GIT_REPOSITORY='https://github.com/sofa-framework/SofaPython3'
  -DSOFAPYTHON3_GIT_TAG='d13d82357b1de1240603cf07f39e1b772f3a96c4'

[sofabot]

[ci-depends-on] detected during build #2.

To unlock the merge button, you must

• Merge or close Enable scene checking when launching through python SofaPython3#616
  For this build, the following CMake flags will be set
  -DSOFAPYTHON3_GIT_REPOSITORY='https://github.com/sofa-framework/SofaPython3'
  -DSOFAPYTHON3_GIT_TAG='d13d82357b1de1240603cf07f39e1b772f3a96c4'